Internally-carbonating cleaning composition and method of use

D - Textiles – Paper – 06 – L

Patent

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D06L 1/00 (2006.01) C11D 1/00 (2006.01) C11D 3/10 (2006.01) C11D 3/20 (2006.01) C11D 11/04 (2006.01)

Patent

CA 2204606

A method of cleaning textile fibers which comprises applying to the fibers, an internally-carbonating cleaning composition at ambient pressure and at an elevated temperature of at least 140°F, the composition being prepared coincident with the application by combining, at the elevated temperature, solutions consisting substantially of a) an aqueous carbonate salt solution comprising 0.1 to 16% by weight of a carbonate salt, the carbonate solution having a pH of between about 8 and 11; b) an aqueous acidic solution comprising 0.1 to 16% by weight of an acid, the acidic solution comprising an acid having a pH of between about 3 and 6; and c) from 0.05 to 5% by weight of a surfactant wherein the relative proportions of carbonate salt, and acid are such that the carbonate reacts with the acid when said solutions are combined so as to create an aqueous composition having a generally neutral pH and from which carbon dioxide is released into the surrounding atmosphere causing carbon dioxide to come into contact with the textile fibers.

Selon l'invention, on nettoie des tapis, des matières de rembourrage, des draps et d'autres fibres textiles en appliquant sur les fibres, à la pression ambiante, une composition aqueuse de nettoyage détergente carbonatée chimiquement, préparée par addition d'une solution de carbonate et d'une solution d'acide, de sorte que l'acide réagisse avec le carbonate pour produire du dioxyde de carbone au moment de l'application sur le textile à nettoyer. L'acide et le carbonate préférés pour cette composition sont l'acide citrique et le carbonate de sodium. De telles compositions sont, de préférence, préparées et appliquées à une température élevée, comprise dans la plage 140-200 DEG F.

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